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The correlation between a  cereal's fiber and potassium contents is r=0.905.  What fraction of the variability in potassium is accounted for by the amount of fiber that servings  contain? ___________ %(Round to the nearest tenth as  needed.)

Respuesta :

The correlation between the two substances can be expressed as follow:

[tex]F=r\cdot P=0.905P[/tex]

Where F is the fiber and P stands for potassium

If we transform the correlation (r) into a percentage, we get

[tex]0.905\to90.5\text{percent}[/tex]

which rounded to the nearest tenth becomes

[tex]91\text{percent}[/tex]

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